D2 Series
User Guide, Rev. 00 (Feb 2015)
18
ACK [ON/OFF] : Available only if the Broadcasting and Echo options are inactive. If selected, the
sending unit waits an answer message from the target unit. If this answer is received before an
adequate time-out, the sending unit transmit the next message, otherwise repeats the same until a
valid answer from the target unit will be received. The maximum number of repetition of the
message is set in the Repetion field.
NAK to DTE [ON/OFF] : Available only if ACK is activated. At the end of the repetition cycle if no
answer from target unit is received, the NAK character (ASCII 21) is sent to the DTE.
Addr to DTE [ON/OFF] : If selected, the data sent to the DTE are preceded by the address of the
sending unit. Rx Addr for Tx [ON/OFF]: Available only if Addr from DTE is inactive. If selected,
the unit stores the entire addressing data (source unit plus all digipeaters if used) of the last
incoming message and reutilises them for the answer.
Echo [ON/OFF] : Available only if ACK and Broadcasting are inactive. It's a simply utility to verify
the radio link. If selected, the target unit receiving an "Echo" message don't release it to its serial
port but repeat it to the source unit that releases the message to its DTE.
Addr from DTE[ON/OFF]: Available only if Rx Addr for Tx is inactive. If selected, the DTE must
manage the addressing of the message. The correct addressing is obtained sending, before of each
message, the appropriate address string. The addressing string contains from 3 to 11 bytes
depending on the route complexity. The necessary bytes are the following:
The 1st is the System Code byte where the two most significant bits are the Broadcasting switch
(bit No. 7) and the Echo switch (bit No. 6). The admissible values are 1...63.
The 2nd byte is the Number of units in the route comprehending the target and all the digipeaters.
The admissible values are 1...9 equivalent to one target unit and up to 8 digipeaters.
The successive bytes are the digipeaters addresses listed in the exact sequence of use.
The last addressing byte is the target address.
Finally the message to be sent with a maximum of 640 bytes or 256 bytes for the use in the
RMO400 Compatible mode.
Repetition [0..255] : Available only if the ACK function is activated. It set the maximum number of
the repetition of the message if the answer from the target is not received.
PwSavOFF [0..240] : The OFF time, in steps of 10 milliseconds, in the Power Saving Cycle. The
related ON time is of 70 milliseconds. This time is used to calculate all the communication timings
therefore must be the same for all the units in the network. If the Power Saving is not desired, set
the PwSavOFF to 0. The maximum allowable PwSavOFF time is of 2.40 seconds.
PwSava [ 0..255] : The waiting time, is steps of 100 milliseconds, to return in the Power Saving
Cycle after any transmitting or receiving cycle. If the Power Saving is not desired, set the PwSava to
0. The maximum PwSava time is 254, equivalent to 25.4 seconds. The value 255 set the unit as
Master in a point-multipoint network. This unit is always active but it can send messages with a
preamble length defined by the PwSavOFF time.
To Next Page
Loading...